I have also the same problem.
This is my logfile.
Anything you can do would be very helpful.
Thanks.

Logfile of HijackThis v1.99.0
Scan saved at 14:51:29, on 01/02/2005
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\System32\cmd.exe
C:\WINDOWS\System32\cmd.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.exe
C:\WINDOWS\system32\LEXBCES.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\LEXPPS.EXE
C:\WINDOWS\System32\carpserv.exe
C:\Program Files\Pinnacle\InstantCDDVD\InstantWrite\iwctrl.exe
C:\Program Files\Lexmark X1100 Series\lxbkbmgr.exe
C:\Program Files\BroadJump\Client Foundation\CFD.exe
C:\Program Files\Common Files\Real\Update_OB\evntsvc.exe
C:\Program Files\Java\j2re1.4.2_06\bin\jusched.exe
C:\Program Files\MSN Apps\Updater\01.02.3000.1001\en-us\msnappau.exe
C:\Program Files\Common Files\Microsoft Shared\Works Shared\WkUFind.exe
C:\WINDOWS\SOINTGR.EXE
C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\WINDOWS\System32\ope2D94.exe
C:\WINDOWS\System32\RUNDLL32.EXE
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Lexmark X1100 Series\lxbkbmon.exe
C:\Program Files\Spyware Doctor\spydoctor.exe
C:\windows\winstart32.exe
C:\windows\system\twunk_1616.com
C:\Program Files\Ulead Systems\Ulead Photo Express 4.0 SE\CalCheck.exe
C:\Program Files\WIDCOMM\Bluetooth Software\BTTray.exe
C:\PROGRA~1\WIDCOMM\BLUETO~1\BTSTAC~1.EXE
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\ZONELABS\vsmon.exe
C:\Documents and Settings\Adnan Nasar\My Documents\HJT\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/customize/ycomp_wave/defaults/sb/*http://www.yahoo.com/search/ie.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/ycomp_wave/defaults/sp/*http://www.yahoo.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.ntlworld.com/broadband
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.timecomputers.com
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/customize/ycomp_wave/defaults/su/*http://www.yahoo.com
F2 - REG:system.ini: Shell=Explorer.exe winsock.scr
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_19_0.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: DgnWebIE - {2843DAC1-05EF-11D2-95BA-0060083493D6} - C:\Program Files\Dragon Systems\NaturallySpeaking\Program\web_ie.dll
O2 - BHO: (no name) - {549B5CA7-4A86-11D7-A4DF-000874180BB3} - (no file)
O2 - BHO: ST - {9394EDE7-C8B5-483E-8773-474BF36AF6E4} - C:\Program Files\MSN Apps\ST\01.02.3000.1002\en-xu\stmain.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O2 - BHO: MSNToolBandBHO - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.3000.1001\en-us\msntb.dll
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - (no file)
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.3000.1001\en-us\msntb.dll
O3 - Toolbar: Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_19_0.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [CARPService] carpserv.exe
O4 - HKLM\..\Run: [SupaDial] C:\Program Files\SupaDial\SupaDial.exe /A
O4 - HKLM\..\Run: [IW ControlCenter] C:\Program Files\Pinnacle\InstantCDDVD\InstantWrite\iwctrl.exe
O4 - HKLM\..\Run: [PinnacleDriverCheck] C:\WINDOWS\System32\PSDrvCheck.exe
O4 - HKLM\..\Run: [Lexmark X1100 Series] "C:\Program Files\Lexmark X1100 Series\lxbkbmgr.exe"
O4 - HKLM\..\Run: [BJCFD] C:\Program Files\BroadJump\Client Foundation\CFD.exe
O4 - HKLM\..\Run: [TkBellExe] C:\Program Files\Common Files\Real\Update_OB\evntsvc.exe -osboot
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_06\bin\jusched.exe
O4 - HKLM\..\Run: [msnappau] "C:\Program Files\MSN Apps\Updater\01.02.3000.1001\en-us\msnappau.exe"
O4 - HKLM\..\Run: [Microsoft Works Update Detection] C:\Program Files\Common Files\Microsoft Shared\Works Shared\WkUFind.exe
O4 - HKLM\..\Run: [SO5 Integrator Pass Two] C:\WINDOWS\SOINTGR.EXE
O4 - HKLM\..\Run: [Zone Labs Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [C:\WINDOWS\System32\ope2D93.exe ] C:\WINDOWS\System32\ope2D93.exe
O4 - HKLM\..\Run: [WinDSNX] C:\WINDOWS\System32\ope2D94.exe
O4 - HKLM\..\Run: [dxset.exe] C:\WINDOWS\dxsetu.exe
O4 - HKCU\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\System32\NVMCTRAY.DLL,NvTaskbarInit
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [Spyware Doctor] "C:\Program Files\Spyware Doctor\spydoctor.exe" /Q
O4 - HKCU\..\Run: [eMuleAutoStart] C:\Program Files\eMule\emule.exe -AutoStart
O4 - HKCU\..\Run: [Winstart] C:\windows\winstart32.exe
O4 - HKCU\..\Run: [twunk_1616] C:\windows\system\twunk_1616.com
O4 - HKCU\..\Run: [Shareaza] "C:\Program Files\Shareaza\Shareaza.exe" -tray
O4 - HKCU\..\RunServices: [Winstart] C:\windows\winstart32.exe
O4 - Startup: PowerReg SchedulerV2.exe
O4 - Startup: neoDVDplus5.lnk = C:\Program Files\Mediostream\neoDVDplus5\neoTasks.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Ulead Photo Express 4.0 SE Calendar Checker .lnk = C:\Program Files\Ulead Systems\Ulead Photo Express 4.0 SE\CalCheck.exe
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: BTTray.lnk = ?
O8 - Extra context menu item: &Google Search - res://c:\program files\google\GoogleToolbar2.dll/cmsearch.html
O8 - Extra context menu item: Backward Links - res://c:\program files\google\GoogleToolbar2.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://c:\program files\google\GoogleToolbar2.dll/cmcache.html
O8 - Extra context menu item: Similar Pages - res://c:\program files\google\GoogleToolbar2.dll/cmsimilar.html
O8 - Extra context menu item: Translate into English - res://c:\program files\google\GoogleToolbar2.dll/cmtrans.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O14 - IERESET.INF: START_PAGE_URL=http://www.timecomputers.com
O16 - DPF: {E7DBFB6C-113A-47CF-B278-F5C6AF4DE1BD} - http://download.abacast.com/download/files/abasetup155.cab
O23 - Service: LexBce Server - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE
O23 - Service: Macromedia Licensing Service - Unknown - C:\Program Files\Common Files\Macromedia Shared\Service\Macromedia Licensing.exe
O23 - Service: NVIDIA Driver Helper Service - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: TrueVector Internet Monitor - Zone Labs Inc. - C:\WINDOWS\system32\ZONELABS\vsmon.exe

Please try this first.

Dav555 very kindly provided this fix:

you should fixed the following problems with HijackThis
F0 - system.ini: Shell=Explorer.exe winsock.scr
F2 - REG:system.ini: Shell=Explorer.exe winsock.scr
O4 - HKLM\..\Run: [dxset.exe] C:\WINDOWS\dxsetu.exe

then delete the following files with GiPo@FileUtilities (Move on boot)
(Remember to go into explorer, folder options, view and uncheck "hide protected operating system files" otherwise you'll spend forever and a day looking for things that aren't showing themselves, like I did!!!!!)

c:\windows\system32\winsock.dll
c:\windows\winsock.scr
c:\windows\dxsetu.exe
c:\windows\system32\winlog.com
c:\windows\system32\dxwinex.exe

I think these locations are right, the above files are either in c:\windows or c:\windows\system32

Reboot, then do a full system scan with your anti-virus program, this will pick up all the affected files and should delete\quarantine them.

Download moveonboot from here & the file(s) you choose will be deleted on reboot.

MoveOnBoot allows you to copy, move or delete files on the next system boot. This comes in very handy, if you need to replace or delete files which are locked by other applications, loaded into memory or cannot be changed until next system boot. You could manually enter a line to the wininit files, but using MoveOnBoot is much simpler, since the program can be integrated into shell - it creates the "Copy/Move/Delete on boot" context menu item.

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